<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
<div id="mvvm-app" style="text-align:center;margin-top:100px">
    <input v-model="title"/>
    <h2>{{title}}</h2>
    <button v-on:click="clickBtn">数据初始化</button>
</div>   
</body>
</html>